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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The more stressed out the male is - the less sperm he is going to produce
ewe ovulation
humans: stress level vs sperm
estrous
Where livelihood is in agriculture
2. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
cowper's gland
hormones
semen evaluation (BSE)
urethra
3. Failure to have one testis (gonad) to descend
age and castration
monorchid
ewe estrus
penis sizes vs delivering methods
4. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
Where livelihood is in agriculture
Size of cow in relation to the amount of milk produced
sperm cell
retractor muscles
5. Look for infection - split - and rupture of the penis
penis and prepuce observation (BSE)
Sperm survival specs
colostrum
seminiferous tubules
6. 30-38 hours after estrus cycle begins
Parturition
~1 month
sow ovulation
estrous
7. 14-19 (17) days
penis proper
ewe estrus cycle
Brown Swiss Cow
femininity of a heifer
8. 26 hours after estrus begins
burdizzo
Avg. bull specs
ewe ovulation
functions of progestrone
9. 16-20 hours
cow estrus
Hard
why does the cow need fat deposits during pregnancy?
humans: stress level vs sperm
10. 45-60 days after breeding; re-breed as required
semen evaluation (BSE)
dairy cattle pregnancy check
age and castration
sow estrus
11. (male) pushes the testes outward toward the legs for a cool-down off of the body
why does the cow need fat deposits during pregnancy?
cremaster muscle
prostaglandin
purpose of Breeding Soundness Exam (BSE) for males
12. Duct through penis that carries sperm and urine
estrus
Sperm survival specs
urethra
reason for seasonal breeding periods
13. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
why does the cow need fat deposits during pregnancy?
visual evaluation (BSE)
organs used in spermatogenesis
feeding a high producing dairy cow
14. Can survive ~7 days in cow. vast majority <48 hours
why does the cow need fat deposits during pregnancy?
urethra
Sperm survival specs
reasons for castration
15. 2 month growth cycle. stored in the epididymis of the bull
Sperm growth rate
castration
penis and prepuce observation (BSE)
mare ovulation
16. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
cremaster muscle
penis sizes vs delivering methods
cervix
things to check for in a breeding soundness exam (BSE)
17. Way to know everything is alright with the breeding male
testosterone
testis (gonads)
things to check for in a breeding soundness exam (BSE)
purpose of Breeding Soundness Exam (BSE) for males
18. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.
Hormones from both the fetus and the mom.
uterus
cowper's gland
testis (gonads)
19. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.
colostrum
testosterone
prostaglandin
vagina
20. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
organs used in spermatogenesis
Follical Stimulating in males
Jersey Cow
behavioral signs of estrus
21. 10-37 (21) days
why does the cow need fat deposits during pregnancy?
mare's estrous cycle
mare estrus cycle
sow ovulation
22. 19-23 (21) days
sow estrus cycle
urethra
scrotum
leydid or interstitial cells
23. 265-285 days
Dairy Cattle Gestation
sow gestation
testosterone
Follical Stimulating in females
24. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.
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25. Parturition is controlled by...
Follical Stimulating in males
hypothalamus and pituitary gland
Hormones from both the fetus and the mom.
sow gestation
26. Help to signal hormone levels which we need both in the brain right next to each other.
hypothalamus and pituitary gland
reason for seasonal breeding periods
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
growth lost from castration methods (knife & band)
27. Animals which have only one estrous cycle (ex: dog - fox)
dry-off time in dairy cattle
sow ovulation
monestrous
penis sizes vs delivering methods
28. Not under a timeline - cow can not be sold as steak
penis proper
Grading choice
rectal palpation (BSE)
effects of estrogen
29. Animals which have many estrous periods per year (ex: cow - sow)
van deferens
Sperm survival specs
ewe's estrous cycle
polyestrous
30. Prevent the cow from getting an infection from the calve
cow estrus
things to check for in a breeding soundness exam (BSE)
ewe ovulation
Dairy calves are removed from cow at birth to...
31. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat
functions of progestrone
stag
vulva
Jersey Cow
32. 336 days
visual evaluation (BSE)
vagina
mare ovulation
mare gestation
33. Implies the amount of estrogen production
femininity of a heifer
retractor muscles
castration
eminal vesicles
34. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)
1. more cost effective - 2. powdered milk is in excess production
burdizzo
ewe ovulation
estrous
35. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
mare estrus cycle
cow estrus
Jersey Cow
libido test (BSE)
36. 2 month growth cycle. stored in the epididymis of the bull
penis and prepuce observation (BSE)
seminiferous tubules
feeding a high producing dairy cow
Sperm growth rate
37. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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38. The more stressed out the male is - the less sperm he is going to produce
uterus
functions of progestrone
normal presentation of the fetus
humans: stress level vs sperm
39. Birthing process (termination of gestation)
reason for seasonal breeding periods
pelvis
Parturition
sperm cell
40. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
retractor muscles
Blood
Lutinizing Hormone in females
sperm cell
41. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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42. (LH) causes female's egg to break (her period)
Follical Stimulating in females
Parturition
Lutinizing Hormone in females
why does the cow need fat deposits during pregnancy?
43. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
Reasons for gestation length being affected
reason for seasonal breeding periods
Where livelihood is in agriculture
age and castration
44. Male on one pin and female on other side
libido test (BSE)
mare estrus
sow estrus
mare ovulation
45. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
stag
mare estrus
retractor muscles
Avg. bull specs
46. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
Holstein Cow
effects of BST
Grading choice
seminiferous tubules
47. What helps regulate spermatogenesis?
testosterone
cow estrus
dry matter and water
reasons for castration
48. Days which have decreasing daylight hours
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49. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
Jersey Cow
Follical Stimulating in males
Blood
seasonally polyestrous
50. Urinary calculi.
kidney stones also called ________ ___________ can develop in the sigmoid flexure
polyestrous
leydid or interstitial cells
retractor muscles